Slim image by replacing noVNC package

Use noVNC static bundle with websockify and trim apt packages to reduce image size while keeping emoji support and VNC tools.

Dockerfile

@@ -16,19 +16,18 @@ ENV DISPLAY=:0 \
     VNC_DEPTH=24 \
     USER=nicotine \
     PUID=1000 \
-    PGID=1000
+    PGID=1000 \
+    NOVNC_VERSION=1.3.0
 
 # Install dependencies
-RUN apt-get update && apt-get install -y \
+RUN apt-get update && apt-get install -y --no-install-recommends \
     # Lightweight window manager
     openbox \
-    xterm \
     dbus-x11 \
     # VNC server
     tigervnc-standalone-server \
     tigervnc-common \
-    # noVNC for web interface
+    tigervnc-tools \
-    novnc \
     python3-websockify \
     # Nicotine+ dependencies
     python3 \
@@ -36,19 +35,23 @@ RUN apt-get update && apt-get install -y \
     python3-gi \
     python3-gi-cairo \
     gir1.2-gtk-3.0 \
-    # Lightweight browser
-    firefox-esr \
-    # For SSH X forwarding
-    xauth \
     # Supervisord to manage processes
     supervisor \
     # Emoji font support
     fonts-noto-color-emoji \
-    # Utilities
+    # TLS certificates for pip
-    wget \
+    ca-certificates \
+    # Download tools for noVNC static bundle
     curl \
-    procps \
+    && apt-get clean \
-    net-tools \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install noVNC static files (no Node.js dependency)
+RUN mkdir -p /usr/share/novnc \
+    && curl -fsSL "https://github.com/novnc/noVNC/archive/refs/tags/v${NOVNC_VERSION}.tar.gz" \
+    | tar -xz --strip-components=1 -C /usr/share/novnc \
+    && rm -rf /usr/share/novnc/utils/websockify \
+    && apt-get purge -y --auto-remove curl \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*